Year	current US$
2009	-1657464959.86319
2010	-2165538018.50981
2011	-1816052124.26015
2012	-115310057.073869
2013	1560037051.83987
2014	972969106.303748
2015	468558910.100156
2016	1030464273.34229
2017	907740245.107139